Home / 128,628.04-191,801.45-120,048.52

Finding the Fourth Proportional to 128,628.04, 191,801.45 and 120,048.52

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Solution

The fourth proportional to 128,628.04, 191,801.45 and 120,048.52 is: 179,008.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,628.04 : 191,801.45 = 120,048.52 : x
  2. Step 2: Convert to fraction form
    128,628.04/191,801.45 = 120,048.52/x
  3. Step 3: Cross multiply
    128,628.04x = 191,801.45 × 120,048.52
  4. Step 4: Simplify right side
    128,628.04x = 23,025,480,206.35
  5. Step 5: Solve for x
    x = 23,025,480,206.35/128,628.04
  6. Step 6: Final answer
    x = 179,008.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.